63
Пошаговое объяснение:
x + 42 = (5/3)*x
x + 42 = x + (2/3)*x
42 = (2/3)*x
x = 42/(2/3) = 42*3/2 = 63
63
Пошаговое объяснение:
x + 42 = (5/3)*x
x + 42 = x + (2/3)*x
42 = (2/3)*x
x = 42/(2/3) = 42*3/2 = 63